Available on Macintosh Mac Plus and earlier.
 (at the computer)
 (at the computer)
 (at the mouse cable)
 (at the mouse cable)
9 PIN D-SUB FEMALE at the computer.
9 PIN D-SUB MALE at the mouse cable.
| Pin | Name | Dir | Description | 
|---|---|---|---|
| 1 | CGND |  | Chassis ground | 
| 2 | +5V |  | +5 VDC | 
| 3 | CGND |  | Chassis ground | 
| 4 | X2 |  | Horizontal movement line (connected to VIA PB4 line) | 
| 5 | X1 |  | Horizontal movement line (connected to SCC DCDA-line) | 
| 6 | n/c | - | Not connected | 
| 7 | SW- |  | Mouse button line (connected to VIA PB3) | 
| 8 | Y2 |  | Vertical movement line (connected to VIA PB5 line) | 
| 9 | Y1 |  | Vertical movement line (connected to SCC DCDB-line) | 
Note: Direction is Computer relative Mouse.
| Contributor: | Ben Harris | 
| Source: | Apple Tech Info Library, Article ID: TECHINFO-0001424 | 
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  Document last modified: 2002-01-13